9983365947 has 24 divisors (see below), whose sum is σ = 15839366400. Its totient is φ = 6031138608.

The previous prime is 9983365921. The next prime is 9983365967. The reversal of 9983365947 is 7495633899.

9983365947 is a `hidden beast` number, since 9 + 9 + 8 + 3 + 36 + 594 + 7 = 666.

It is not a de Polignac number, because 9983365947 - 2⁶ = 9983365883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9983365967) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1265247 + ... + 1273112.

It is an arithmetic number, because the mean of its divisors is an integer number (659973600).

Almost surely, 2^9983365947 is an apocalyptic number.

9983365947 is a deficient number, since it is larger than the sum of its proper divisors (5856000453).

9983365947 is a wasteful number, since it uses less digits than its factorization.

9983365947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2538407 (or 2538404 counting only the distinct ones).

The product of its digits is 44089920, while the sum is 63.

The square root of 9983365947 is about 99916.7951197395. The cubic root of 9983365947 is about 2153.2394610427.

The spelling of 9983365947 in words is "nine billion, nine hundred eighty-three million, three hundred sixty-five thousand, nine hundred forty-seven".